diff options
Diffstat (limited to 'Kbuild')
| -rw-r--r-- | Kbuild | 73 |
1 files changed, 27 insertions, 46 deletions
@@ -4,39 +4,47 @@ # 1) Generate generic-asm-offsets.h # 2) Generate asm-offsets.h -##### -# 1) Generate generic-asm-offsets.h - -generic-offsets-file := include/generated/generic-asm-offsets.h - -always := $(generic-offsets-file) -targets := $(generic-offsets-file) lib/asm-offsets.s +# Default sed regexp - multiline due to syntax constraints +define sed-y + "s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \ + /^->/{s:->#\(.*\):/* \1 */:; \ + s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \ + s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ + s:->::; p;}" +endef -quiet_cmd_generic-offsets = GEN $@ -define cmd_generic-offsets +# Use filechk to avoid rebuilds when a header changes, but the resulting file +# does not +define filechk_offsets (set -e; \ - echo "#ifndef __GENERIC_ASM_OFFSETS_H__"; \ - echo "#define __GENERIC_ASM_OFFSETS_H__"; \ + echo "#ifndef $2"; \ + echo "#define $2"; \ echo "/*"; \ echo " * DO NOT MODIFY."; \ echo " *"; \ echo " * This file was generated by Kbuild"; \ - echo " *"; \ echo " */"; \ echo ""; \ - sed -ne $(sed-y) $<; \ + sed -ne $(sed-y); \ echo ""; \ - echo "#endif" ) > $@ + echo "#endif" ) endef +##### +# 1) Generate generic-asm-offsets.h + +generic-offsets-file := include/generated/generic-asm-offsets.h + +always := $(generic-offsets-file) +targets := $(generic-offsets-file) lib/asm-offsets.s + # We use internal kbuild rules to avoid the "is up to date" message from make lib/asm-offsets.s: lib/asm-offsets.c FORCE $(Q)mkdir -p $(dir $@) $(call if_changed_dep,cc_s_c) -$(obj)/$(generic-offsets-file): lib/asm-offsets.s Kbuild - $(Q)mkdir -p $(dir $@) - $(call cmd,generic-offsets) +$(obj)/$(generic-offsets-file): lib/asm-offsets.s FORCE + $(call filechk,offsets,__GENERIC_ASM_OFFSETS_H__) ##### # 2) Generate asm-offsets.h @@ -50,39 +58,12 @@ always += $(offsets-file) targets += $(offsets-file) targets += arch/$(ARCH)/lib/asm-offsets.s - -# Default sed regexp - multiline due to syntax constraints -define sed-y - "s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \ - /^->/{s:->#\(.*\):/* \1 */:; \ - s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \ - s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ - s:->::; p;}" -endef - CFLAGS_asm-offsets.o := -DDO_DEPS_ONLY -quiet_cmd_offsets = GEN $@ -define cmd_offsets - (set -e; \ - echo "#ifndef __ASM_OFFSETS_H__"; \ - echo "#define __ASM_OFFSETS_H__"; \ - echo "/*"; \ - echo " * DO NOT MODIFY."; \ - echo " *"; \ - echo " * This file was generated by Kbuild"; \ - echo " *"; \ - echo " */"; \ - echo ""; \ - sed -ne $(sed-y) $<; \ - echo ""; \ - echo "#endif" ) > $@ -endef - # We use internal kbuild rules to avoid the "is up to date" message from make arch/$(ARCH)/lib/asm-offsets.s: arch/$(ARCH)/lib/asm-offsets.c FORCE $(Q)mkdir -p $(dir $@) $(call if_changed_dep,cc_s_c) -$(obj)/$(offsets-file): arch/$(ARCH)/lib/asm-offsets.s Kbuild - $(call cmd,offsets) +$(obj)/$(offsets-file): arch/$(ARCH)/lib/asm-offsets.s FORCE + $(call filechk,offsets,__ASM_OFFSETS_H__) |